Switch-stand.



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SWITCH STANDV' Application led Sept. 8, 1902.1 (Nllodel.)

Patented Nov. I8, 1902.

's sheets-sheet l.

- N. 714,060A Patented Nov. I8, |902.

E.. N. sTnoM.

SWITCH STAND. (Applmition led Sept. B, 1902.) (No Model.) 3 Sheets-Sheet2.

. E I O -s C U .ZzwefZg/' s I. 05250273 No. 7|4,060. Patented Nov. I8,|902..

'EL N. STROM.

SWITCH STAND.

(Application med sept. s. 1902. (Ilo Model.) 3 Sheets-Sheet 3.

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UNITED STATES EUGENE N. STROM, OF CHICAGO, ILLINOIS, ASSIGNOR TO STROMMANUFAC- TURING COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OFILLINOIS.

SWITCH-STAN D.

' SPECIFICATION forming part of Letters Patent No. 714,060, dated.November 18, 1902.

.Application filed September 8, 1902. Serial No. 122,505. (No model.)

To .mZ/ whom t may concern: end of its throw in the direction toward theBe it known that I, EUGENE N. STROM, a track in Fig. l; and Fig. 9, aview like that citizen of the United States, residing at Chipresented byFig. 7, but showing the relative cago, in the county of Cook and Stateof Illipositions of the mutilated pinion and rack- 55 5 nois, haveinvented a new anduseful Imbar of Fig. 6 when the rack-bar of Fig. 8 isprovement in Switch-Stands, of which the folat the end of its throw, aspresented in the lowing is a specification. last-named figure.

My invention relates to an improvement in A is the switch-stand casing,which I prethe class of switch-stands of the construction fer forconvenience to form in three horizon- 6o 1o which adapts them for use inoperating the tal sections, fitting one upon the other and three-throwvariety of railway-switches, this bolted together, as shown. In thecenter of being one of the purposes for which I have the casing isjournaled to extend transversely devised my improvement, though it isalso thereof the shaft B, shown to be provided at adapted for use withother multiple-throw one end with a beveled gear a, meshing with 65 I5switches, particularly those sometimes ema similar gear ct on theswitch-stand spindle ployed in the kind of railway-crossing known C,which is journaled to oscillate in a lateral as a combination-crossing.extension of the casing. Secured side by side In the class referred tomy invention reon the shaft B to turn with it are the two lates moreparticularly to an improvement iu mutilated pinions'D and E, both of thesame 7o zo the variety of switch-stand in which two lonconstruction.Each pinion is provided with a gitudinally-reciprocable bars areconnected single series of teeth b, the number of which each with aswitch for throwing it by turning is preferably, as shown, less by onethan the an oscillating shaft with which the bars are notches c, (shownto be six, though the numconnected; and my invention also relates to berof teeth and notches may vary from the 75 25 an improvement in theconstruction ot' the representation in the drawings withoutdeoperating-lever of the switch-stand. parture from my invention.) Theplain por- Referring to the accompanying drawings, tion of thepinion-perimeter between the ex- Figure lis a planview of a three-throwrailtreme notches describes an arc in a circular way-switch equippedwith my improved plane between the arc described by the outer 8o 3oswitch-stand. Fig. 2 is a plan view of the extremities of the teeth andthat described switch-stand with details shown broken and by the basesof the notches. Thus the plain with the upper portion of the casingremoved; perimeter portion of each pinion extends be- Fig. 3, a sectiontaken at the line 3 on Fig. tween opposite ends of the series of teethin 2 and viewed in the direction of the arrow; the arc of acircleintersectingthe teeth,where- 85 35 Fig. 4, a section taken at the line 4onleither by the latter protrude beyond the plane of Fig. 2 or Fig. 3and viewed in the direction the unserrated portion of thepinion-perimeofarrows; Fig. 5, a section taken at the line ter, while the notchesextend inside that 5 on Fig. 3 and viewed in the direction of plane,forming shoulderstor partial teeth at the arrow; Fig. 6, a View likethat presented the outer margins of the extreme notches. 9c 4o by Fig.4, but showing one of the rack-bars D' and E' are rack-bars mounted torecipat the extreme end of its throw in the direcrecate longitudinallyin the opposite endsof tion away from the track in Fig. l, with its thecasing A, beyond. which they protrude pinion in the position thenoccupied by it; and within which they engage at their under Fig. 7, aview like that presented by Fig. 5, toothed sides, respectively, withthe pinions 95 45 but showing the position of the `mutilated D and E,being so adjusted'relatively to the pinion of one rack-bar when the rackand latter that their plain lower surfaces extend pinion presented toview in Fig. 6 occupy the tangentially to the plain portions of theperrelative positions shown therein; Fig. 8, a imeters of the pinionswhen the latter are view like that presented by Fig. 6, but showturnedto positions in which the plain porroo 5 5o ing the other of the tworack-bars and mutitions of their perimeters meet the under sides latedpinions, with the bar at the extreme of the bars. On the upper side ofeach bar is provided an elongated offset d, forming at its opposite endsthe shoulders d' and cl2 to abut against the inner sides of the casing Aand limit the movements therein of the bars. The notches c', forming theteeth b' on the under sides of the rack-bars to engage with those on therespective pinions, are preferably fewer by one on each bar than thoseof each pinion,` while the rack-teeth of each bar exceed b v one thenumber of teeth of each pinion, though the outer sides ofA the extremeteeth on each bar are shallower than the sides of the remaining teeth ofthe series to conform to the shoulders t at the opposite ends oi' therespective series of pinionteeth.

The pinions are so set on the shaft B that their respective series ofteeth are always on opposite sides of the axis of the shaft, as they areshown to he in the relative positions of the pinions represented in Fig.8. I prefer to provide on a side ot' each rack-bar near one end of itsseries of teeth a shoe e, having a concave lower edge to conform to thearc of the plain perimeter portion of the pinion below it, which carrieson one side to engage with the shoe c, for a purpose hereinafterdescribed, a lcompanion shoe f, convexly arcshaped on its outer edge tocoincide with the arc of the plain perimeter portion of the pinion.

F is the operating-lever, pivotally connected at one end with the outerend of the shaft B and having elongated slots g and g', Fig. 3,intersecting at right angles to each other between its ends to embracethe hasps g2, g3, and g4 in different positions of the throw of thelever. To enable the lever to be easily thrown from one to the other ofthe three positions at right angles to each other at which the hasps areshown to be provided in Figs. 1 and 2, it is bifurcated at its innerend, there to embrace the flattened headed end 7L of the shaft B, onwhich the lever is fulcrumed by a pivotpin t', passing through it andthrough the fork h' of the lever. Thus in the central position of theoperating-lever it may be raised on its fulcrnm for turning it to eitherof the two other positions. In turning the lever toward either hasp g3or g4 the flat sides of the fork engage with the fiat-sided head h toeffect rotation of the shaft B and a quarter-turn of the target-shaft C,besides throwing a switch in the manner hereinafter described, and thelever in reaching its horizontal position embraces at its slot g' thehasp there coinciding with it. To return the lever to the centralposition in which it is illustrated, it is raised (thereby turning theshaft B to set the target and throw a switch accordingly) to a verticalposition, in which the shaft-head h and fork h' are vertical and permitthe lever to be lowered into alinement with the shaft B to embrace atits slot g the hasp g2. In either of the three positions of theoperating-lever it may be secured by a padlock (not shown) engaging withthe hasp.

The three-throw railway-switch in connection with which my improvedswitch-stand is shown to be operatively applied presents n0 feature ofnovelty.

G and G' represent the divergent stockrails.

H and H' are the longer point-rails, and I and I' are the shorterpoint-rails. The pointrail I is connected in a usual manner by ahead-rod It through a known form of switchrail adjustment (indicated atfr) with the point rail H. The point-rail I' is similarly connected by ahead-rod 7s' with the point-rail H'. The point-rail H is pivotallyconnected through the medium of a switch-rod Z, also provided with anadjustment with the adjacent end of the rack-bar E', and the pointrailH' is similarly connected with the adjacent end of the rack-bar Dthrough the Inedium of a switch-bar Z', likewise shown to be provided4with a throw-adjusting device ai. As will therefore be understood, whenwith the rails in the relative positions for the main track in whichthey are shown the point-rail H is thrown in the direction away from therail Gr into contact with the point-rail I', it throws the point-rail Ithrough the medium of the head-rod 7s into contact with the pointrailH', and with the rails in the illustrated relative positions when thepoint-rail H' is thrown in the direction away from the rail G intocontact with the point-rail I it throws the point-rail I' through themedium of the head-rod k' into contact with the point-rail H.

The described throwing of the switch-rails is accomplished byturning'the operating-lever F as follows: As shown, the lever of theswitch-stand is in its central position, with the switch-rails set forthe main track. In that condition of the switch-stand the pinion D andrack-bar D' occupy the relative positions in which they are representedin Fig. 4f, with the rack bar shoulder d' abutting against the casingand a pinion-shoulder t engaging with an extreme rack-tooth to lock therack against longitudinal return Inovement, in which position it isfurther locked by the engagement with each other of therespective shoese and f, and the pinion E and rack-bar E' occupy the relative positionsin which they are represented in Fig. 5, with a pinion-shoulder tengaging with an extreme rack-tooth to lock the rack againstlongitudinal advance movement, in which position it is further lockedagainst such movement by the engagement with eachother of the respectiveshoes e. and f. To throw the switch-rails H I, the lever is raised to aVertical position and turned toward the right to a horizontal positionto rotate the shaft B and actuate the pinion E and rack E' to therelative positions represented in Fig. 8, thus to advance the rack E',while the rack D' remains stationary and the pinion D will have beenturned to the position in which Figs. 8 and 9 represent it. By reversingthe lever F to restore it to its central position and turn back theshaft IOO IIO

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B the switch-rails H I are returned to the positions shown in Fig. l toreset them for the main track and the rack E' and pinions D and D arerestored to their initial positions.

To throw the switch-rails H' I', the operating-lever is raised andturned toward the left to a horizontal position to rotate the shaft Band actuate the pinion D and rack D' to the relative positionsrepresented in Fig. 6, thus to retract the rack D', while the rack E'remains stationary and the pinion E will have been turned to theposition in which Fig. 7 represents it. By reversing the throw of thelever to restore it to its central position the switch-rails H' I arereturned to the posi,-J

tions in which they are shown in Fig. l to reset them for the maintrack, and the rack D and pinions are again restored to theirinitialpositions, (shown in Figs. 4 and 5,) in which each is in readiness to beengaged with its rack-bar for moving it by turning the operating-leverfrom its normal central position to one side or the other.

lVhat I claim asnew, and desire to secure by Letters Patent, is-

1. In a switch-stand, the combination with The casing of a shaftjournaled therein, mutilated pinions set on said shaft with their seriesof teeth respectively on opposite sides of the shaft-axis, and rack-barssupported to be reciprocated longituditionally in said casing byengagement with their teeth of said pinion-teeth.

2. In a switch-stand, the combination with the casing of a shaftjournaled therein, mutilated pinions each having a series of teeth and aplain perimeter portion extending between opposite ends of said seriesin the arc of a circle intersecting said teeth, said pinions being seton the shaft with their series of teeth respectively on opposite sidesof the shaft-axis, and rack-bars supported to be reciprocatedlongitudinally in said casing by engagement with their teeth of saidpinionteeth.

3. In a switch-stand, the combination with the casing of a shaftjournaled therein, mutilated pinions each having a series of teeth and aplain perimeter portion extending between opposite ends of said seriesin the arc of a circle intersecting said series and forming shoulders ofthe outer walls of the extreme notches, said pinions being set on theshaft with their series of teeth respectively on opposite sides of theshaft-axis, and rackbars supported to be reciprocated longitudinally insaid casing by engagement with their teeth of said pinion-teeth, theextreme members of each series of rack-teeth being shallower on theirouter than on their inner sides.

4. In a switch-stand, the combination with the casing of ashaftjournaledtherein, mutilated pinions each having a series of teeth and a plainperimeter portion extending between opposite ends of said series in thearc of a circle intersecting said teeth, said piuand mutually engagingrack-locking shoes on said bars and pinions.

5. In a switch-stand, the combination with the casing of a verticalspindle journaled therein, a horizontal shaft journaled in said casingand geared at one end to said spindle to turn it by turning said shaft,mutilated pinions, D and E, mounted side by side on said shaft withtheir series of teeth respectively on opposite sides of its axis,rack-bars D and E supported to move longitudinally in said casing andrespectively engaging with said pinions, and an operating-leverfulcrumed on the opposite end of said shaft.

6. A switch-stand comprising, in combination with its casing, atarget-shaft Oprovided at its lower end with a beveled gear a', ahorizontal shaft B journaled in the casing and carrying at one end abeveled gear a meshing with said gear a/ and having fnlcrumed on itsopposite end an operating-lever, mutilated pinions D and E secured sideby side on said shaft to extend their series of teeth respectively onopposite sides of the shaft-axis, rackbars Dl and E' supported in thecasing respectively above said pinions D and E to be reciprocatedlongitudinally by engagement with their teeth of the pinion-teeth, andshoes e and f respectively on said rack-bars and pinions, snbstantiallyas described.

7. In a switch-stand, the combination with the casing, of a shaftjonrnaled therein and having a iattened outer end, mutilated Apinionsset on said shaft with their series of teeth respectively on oppositesides of the shaftaxis, rack-bars supported to be reciprocatedlongitudinally in said casing by engagement with their teeth of saidpinion-teeth, and an operating-lever having a bifurcated end at which itembraces and is fnlcrumed on the fiattened end of said shaft,substantially as and for the purpose set forth.

8. In aswitch-stand, the combination with the casing of a shaftjournaled therein and provided with a fiat head at its outer end,

mutilated pinions set on said shaft with their y series of teethrespectively on opposite sides of the shaft-axis, rack-bars supported tobe reciprocated longitudinally in said casing by engagement with theirteeth of said pinionteeth, an operating-lever having a bifurcated end atwhich it embraces and is fnlcrumed on said shaft-head and providedbetween its ends with longitudinal slots intersecting each other atright angles, and hasps on the stand at the three different positions ofthrow of the lever to be embraced by said slots, substantially asdescribed.

EUGENE N. STROM.z In presence of ALBERT D. BACCI, M. S. MACKENZIE.

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